
/****************************************************************************
**
** Copyright (C) 2004-2008 VATATA.com . All rights reserved.
**
** This file is the part of the Miniutil Poject of VATATA.com.
** Vatata's miniutil library is lightweight and portable (for linux
** and Windows). The C++ Class Library included Threadpool, Dll danymic loading, 
** General socket application model and tcp server, httpserver/servlet, etc. 
** It is a pratical utility disigned for who don't want learn the Big C++ 
** Developing Platform, such as  Boost or ACE.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file.  Alternatively you may (at
** your option) use any later version of the GNU General Public
** License if such license has been publicly approved by VATATA.com.
** (or its successors, if any) and the Miniutil Project Aministrators. 
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://www.gnu.org/licenses/lgpl.html. If you are unsure which 
** license is appropriate for your use, please review the following 
** information: http://code.google.com/p/miniutil/ or contact 
** http://www.vatata.com.
**
** In addition, as a special exception, VATATA.com, as the sole
** copyright holder for Miniutil Project, grants users of VATATA
** P2P Platform the right to release and package with the related 
** libraries without the source code.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. vatata reserves all rights not expressly
** granted herein.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/



/*

*/


#ifndef MINIUTIL__SYS_CRON_H__
#define MINIUTIL__SYS_CRON_H__

#include <list>

#include "miniutil/threadpool.h"
#include "miniutil/date.h"

namespace miniutil
{
	namespace sys
	{

		class task_error : public std::runtime_error
		{
		public:
			task_error( const std::string & msg );
		};

		class task_manager 
		{
		protected:
			struct _task_type
			{
				miniutil::runnable * p_task;
				miniutil::m_uint32_t execute_ms;
				miniutil::m_uint32_t interval_ms;
				miniutil::m_uint32_t loop_time;
			};

			std::list< _task_type *> task_queue;
			miniutil::thread     manager;
			miniutil::threadpool workers;
			miniutil::mutex     task_mutex;
			bool				running;
		public:
			task_manager();
			~task_manager();
			void operator()();

		public:
			enum 
			{
				TYPE_NONE  = 0,
				TYPE_DELAY = 1,
				TYPE_LOOP  = 2,
				RETRY_INTERVAL = 3000
			};

			void call(  miniutil::runnable * p_task );
			void delay( miniutil::runnable * p_task, miniutil::m_uint32_t delay_ms = 0 );
			void loop( miniutil::runnable * p_task, miniutil::m_uint32_t delay_ms = 0 , miniutil::m_uint32_t interval_ms = 1000 , miniutil::m_uint32_t loop_time = 0 );

			//void at( miniutil::runnable * p_task, unsigned int hour = 2, unsigned int min = 0 );
			//void hour( miniutil::runnable * p_task, unsigned int min = 0 );
			//void daily( miniutil::runnable * p_task, unsigned int hour = 2, unsigned int min = 0 );
		
			bool cancel( miniutil::runnable *p_task );
			int  check( miniutil::runnable *p_task );

			size_t count();
			void clear();

			void dump();
		};

		//end namespace miniutil::sys
	}
}


#endif
